*{
    padding:0px;
    margin:0px;
}
.buynav{
    display: flex;
    line-height: 6vh;
  
}
.buynav :first-child{
    margin-left: 8vw;
    margin-right:36vw;
 
   
}
.buynav :last-child{
  
    font-weight: bold;
}
.buyaddress{
    display: flex;
    justify-content: space-between;
    height:13vh;
    line-height: 13vh;
    padding-left:6vw;
    padding-right: 6vw;
    border-bottom: 5px solid #ccc
   
}
.kuai_nei{
    border-bottom: 1px solid #ccc;
}
.kuai_nei div{
    display: flex;
    justify-content: space-between;
    padding-left: 6vw;
    padding-right:6vw;
   line-height: 5vh;
  
}